Composition for treating piling



Patented Oct. 21, 1924.

UNITED STATES CARL L. WEIGHT AND EDWARD TOAL, OF OAKLAND, CALIFORNIA.

COMPOSITION FOR TREATING PILING.

No Drawing. Application filed May 18,

To all whom it may concern: 7

Be it known that CARL L. WRIGHT and EDWARD TOAL, citizens of the United States, residing at Oakland, inthe county of Alameda and State of California, have invented new and useful Improvements in Compositions for Treatin Piling, of which the following is a speci cation.

This invention relates to a composition for treating piling.

Numerous attempts have been made to find means to protect piling and render them impervious to the ravages of toredo. and other marine insects, and it is the principal object of the present invention to provide a composition which may be applied to piling either before or after they have been installed, and which will prevent marine insects from reaching the piling and damaging the same. a

The present invention contemplates the application of a viscous composition to the surface of the pile while in a heated condition, thereafter permitting the same to set and form a coating through which marine insects cannot bore. A convenient method of applying this composition is. disclosed in our co-pending application filed -concurrently herewith and bearing Serial No. 470,697..

The mixture comprises asphalt, powdered or crushed red brick, and air slaked lime, or kieselguhr. The ingredients are used in the following proportions:

. Parts. Asphaltum 5 Red brick 3 Air slaked lime or kieselguhr 1- These ingredients are mixed by heating ance to the activities of the insects.

1921. Serial No. 470,696.

the asphalt until it has liquefied, thereafter thoroughly mixing the crushed brick and the lime therewith. It is preferred that the asphalt shall be of the grade known as petrolastic, having a penetration of 31 40. The asphalt will tend to water-proof the piling and will offer considerable resist- The brick dust adds to, the mass, and also serves to absorb all the oil. By the'addition of the brick dust, the composition will resist heat and will not melt when subjected to solar heat. The lime makes the mixture elastic and pliable to a certain extent so as to prevent checking or cracking of the composition when subjected to atmospheric changes after it has set.

In applying this composition, it is preferred to first wrap the piling with paper,

thereafter placing a reinforcing wire covering over the piling and then applying the composition, either by forms or otherwise, so that the pile will be imbedded within the composition and a coating of the desired thickness produced over the immersed portion of the pile.

While we have shown the preferred composition and the preferred proportions of the parts, it is to be understood thatvarious changes might be made without departing from the splrit of the invention as claimed.

Having thus described our invention, what we claim and desire to secure by Letters Patent is:

A composition of the class described comprising asphaltum, crushed red brick, and air slaked lime in proportions whereb to provide a heat resisting and elastic pro uct.

CARL L. WRIGHT. EDWARD TOAL. 

